Merge branch 'tbr/fix_duplicate_initial' into 'master'

thread_br: avoid duplicate initialization for border router and increase mqtt task stack size

Closes RMN-2001 and RMN-2047

See merge request app-frameworks/esp-rainmaker!479

components/esp_rainmaker/src/thread_br/esp_rmaker_thread_br_launcher.c

@@ -139,7 +139,13 @@ static void thread_br_event_handler(void* arg, esp_event_base_t event_base, int3
         }
     } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_CONNECTED) {
         esp_openthread_lock_acquire(portMAX_DELAY);
-        ESP_ERROR_CHECK(esp_openthread_border_router_init());
+        // Create link local address for Wi-Fi Station interface
+        esp_netif_create_ip6_linklocal(esp_netif_get_handle_from_ifkey("WIFI_STA_DEF"));
+        static bool border_router_initialized = false;
+        if (!border_router_initialized) {
+            ESP_ERROR_CHECK(esp_openthread_border_router_init());
+            border_router_initialized = true;
+        }
         esp_openthread_lock_release();
     }
 }

examples/thread_br/sdkconfig.defaults

@@ -31,6 +31,10 @@ CONFIG_ESP_RMAKER_LOCAL_CTRL_STACK_SIZE=8096
 # Application Rollback
 CONFIG_BOOTLOADER_APP_ROLLBACK_ENABLE=y
 
+# Increase the MQTT task stack size to use generate new Thread dataset command
+CONFIG_MQTT_USE_CUSTOM_CONFIG=y
+CONFIG_MQTT_TASK_STACK_SIZE=7168
+
 # mbedTLS
 CONFIG_MBEDTLS_CMAC_C=y
 CONFIG_MBEDTLS_SSL_PROTO_DTLS=y